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My favorite character is Vasilisa from a book "Chasodei". She is very tall with red hair and she has a red and black wings. After her 14 birthdays, her father took daughter to his home planet, Eflara. She began to learn to manage a time there. And she started to get. At the end of the history, Vasilisa and Fesh became the masters of time.

1 предложение неправильное. Автор рассказывает о любимом персонаже из выбранной книги, а не из данной учителем книги

Это не обязательно. Нужно вообще любимую книгу и любимого персонажа. Ранее я писала про книгу "Часодеи". Теперь нам задали из любимых книг, написанных ранее, написать про любимого персонажа. Так что все нормально

Vasilisa from the bookhas red and black, не нужен артикль a14 birthday

My favorite character in the book "Chasodei" is Vasilisa. She is very tall with red hair and she has red and black wings. After her 14th birthday, her father took his daughter to his home planet, Eflara. There she began to learn managing time. And she started to be good at it. At the end of the story, Vasilisa and Fesh became the masters of time.